2015-2027 Audi Noise Diagnosis with Frequency Analysis App TSB

Audi has issued Technical Service Bulletin (TSB) 2051095/11 to inform technicians about the availability and use of the Audi Frequency Analysis app. This app serves as a crucial diagnostic tool, enabling more precise identification and analysis of various noise complaints in Audi vehicles. The TSB applies to all Audi vehicles from model years 2015 through 2027.

The primary purpose of the Audi noise diagnosis app is to assist in pinpointing the exact frequency of a noise complaint. By understanding the specific frequency, technicians can better diagnose the source of the noise and implement targeted repair measures, which may be detailed in other related TSBs. This informational bulletin does not address a specific customer complaint but rather provides a tool for improved diagnostic accuracy.

Revision History

Technical Service Bulletin 2051095/11 has undergone several revisions to keep the information current:

What is the Audi Frequency Analysis App?

The Audi Frequency Analysis app is a specialized software tool designed to measure and analyze sound frequencies within a vehicle. When a customer reports an unusual noise, this Audi noise diagnosis app allows technicians to record the sound and then analyze its frequency components. This technical background helps in differentiating between various types of noises, such as vibrations, hums, or rattles, by identifying their unique frequency signatures.

How the App Helps with Noise Complaints

The app provides a structured approach to diagnosing noise-related issues. Technicians can use the Audi noise diagnosis app to diagnose noise complaints more precisely so that targeted measures can be found for specific complaints, often referenced in other TSBs.

An updated version of the app was released in February 2026. This version includes two main areas: "Basic" and "Advanced." The "Basic" area is designed for simple measurements conducted in dealerships. The "Advanced" area, intended for advanced measurements with additional equipment in Audi factory analysis, was not yet fully developed and ready for use as of March 2026.

After opening the basic application, technicians can record a noise complaint. This recording can then be played back and paused for detailed examination. By pressing on the diagram within the app, the frequency at which the complaint occurred can be determined. While the view in the diagram can be adjusted through the options menu, this is generally not necessary for most diagnostic tasks.

All recordings made with the app can be accessed by selecting "Files" in the bottom corner of the screen. Once a file is selected, it can be analyzed, edited, sent (though this requires another external app for transmission), or deleted via the three dots menu.

App Availability

The Audi Frequency Analysis app is freely available for both Apple and Android devices. You can download the app using the following links:

• Apple: https://apps.apple.com/us/app/audi-frequency-analysis/id1589055470
• Android: https://play.google.com/store/apps/details?id=de.audi.frequenzanalyseapp&gl=DE

QR codes are also provided in the TSB for easy access to these download links.

Important Warranty Information

This Technical Service Bulletin 2051095/11 is purely informational and is not applicable to any Audi Warranty coverage. Owners should be aware that this bulletin serves as a guide for diagnostic tools rather than a repair procedure covered under warranty.

Additional Information for Technicians

All parts and service references provided in this TSB (2051095) are subject to change and/or removal. Technicians are advised to always check with their Parts Department and/or ETKA for the latest information and parts bulletins. Additionally, it is crucial to consult the Repair Manual for details on fasteners, bolts, nuts, and screws that require replacement during any repair process.

NHTSA ID: 2051095/11